Rzeczownik z ang. na O
- Orange
- Owl
- Oil
- Octopus
- Onion
- Oak
- Oven
- object
- Open
- office
- Olive
- Ostrich
- one
- Ocean
- Order
- October
- Orgasm
- Oat
- oval
- Oyster
- Old
- Opera
- Out
- Only
- Okay
- Over
- Owner
- Ornament
- Orphan
- Owen
- Oracle
- Okey
- Opium
- Opening
- Other
- Opportunity
- Orangutan
- Opener
- Oats
- Oatmeal
- Oman
- Oxygen
- Outlet
- Orc
- Otter
- organ
- Oral
- Orca
- Online
- officer
- Our
- Oscar
- Organization
- Orchestra
- Opal
- Older
- obstacle
- Oreo
- ore
- Orb
- olives
- own
- Outside
- operator
- Ogre
- offer
- Odd
- Obvious
- orange juice
- Option
- opposite
- Operation
- Olivia
- olive oil
- Okno
- Ohio
- o'block
- Oak wood
- Overthinking
- organism
- Ordinary
- Omlet
- oh my god
- ocular
The words in the list Rzeczownik z ang. na O come from players of the word game Categories game.